Time hasn't ticked smoothly for the national tour of tick, tick...BOOM! in recent weeks.

Two engagements for the company have been canceled, a spokesperson confirmed: April 1-6 at Nashville's Tennessee Peforming Arts Center and April 8-13 at Washington DC's Warner Theatre.

The decision to cancel was based on a number of factors according to Steven Greil of TPAC, including "slow ticket sales, the war in Iraq" and more. Similar factors were involved in the DC cancellation, a tour rep said. Refunds are at point of purchase.

The three-actor musical by the late lyricist-librettist-composer Jonathan Larson (Rent) is based on his own feelings and situation as he faced personal and professional crossroads in 1990 (when he turned 30 and presented the work in showcases as 30/90). The fact that ticket sales are sluggish in some markets should be a call to arms to Rent-heads who want to see this sister show to the Pulitzer Prize-winner succeed.

Christian Campbell stars as Jonathan on tour, but when the tour hits Boston in May Joey McIntyre will play the role (he grew up in Boston). The work was seen Off-Broadway in 2001 under the direction of Scott Schwartz. A cast album is on store shelves.

The tour is still skedded for April 29-May 11 at Pittsburgh's Byham Theatre, May 13-25 at Chicago's Shubert Theatre and May 27-June 8 at Boston's Wilbur Theatre.